Which of the following primarily reflects the opening of voltage-gated Na* channels? A. The resting membrane potential B. The depolarization phase of the action potential C. The threshold potential D. The repolarization phase of the action potential E. All of the above

Q: Transmission of the nerve signal across a synapse is accomplishedby thea. movement of Na+ and K+.b.…

A: Introduction  Neuron/Nerve: A neuron is a single nerve cell which consists of central cell body,…

Q: A graded potential that achieves threshold leads to the generation of an action potential. Which one…

A: Graded potentials are made by outside stimuli in sensory neurons or by neurotransmitters discharged…

Q: Put the following in the correct order. A. Neurotransmitter release B. Ca2+ entry into the…

A: Nerve cells called neurons are responsible for sending instructions throughout your body to perform…

Q: During a typical action potential in a nerve, which of the following is happening?  Multiple…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: Match the description with the statement that best describes the following regions e dendrites +…

A: Neuron:

Q: Charge from depolarization along the axon reaches the axon terminal, but there is a lack of…

A: Neurotransmitters can be defined as a chemical molecules that are involved in the transmission of…

Q: What happens to the sodium inside the cell once the action potential has passed down the axon.…

A: Normally the cell membrane remains negative inside in comparison to outside. This negative potential…

Q: A 100-um diameter nerve axon has the following properties: rm = 2.5 x 104 ohm x cm, ri = 1 x 105…

A: The resting Vm is the membrane potential when no current is flowing through the axon. It is the…

Q: The Na+/K+ ATPase pump is a. not required for action potential firing. b. important for…

A: Introduction  Chloride is the most abundant anion in the extracellular fluid. Along with Chloride…

Q: What guarantees that there are unidirectional action potentials? Choice A threshold  B.…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: potential during an action poten were entirely driven by the chanc in the concentration of sodium à…

A: Action potential occurs when a stimulus has to be passed in the form of electrical impulse from one…

Q: Suppose that gated ion channels for Na+or Ca2+ opened in the plasma membrane of a muscle cell.The…

A: The correct option is (d) All of these.

Q: Transmission of the nerve impulse across a synapse isaccomplished bya. the release of Na+ at the…

A: Introduction  Neuron/Nerve: A neuron is a single nerve cell which consists of central cell body,…

Q: A change in the voltage across a neuron’s plasma membranethat makes the neuron less likely to fire…

A: The neuron is the structural and functional unit of the nervous system. The neuron is also known as…

Q: Which of the following is true of graded potentials? a. They always reach the same voltage o b. They…

A: Neurons are the basic structures and functional units of the nervous system. The axon or the nerve…

Q: The difference in charges across the plasma membrane of anunstimulated neuron is calleda. an EPSP.b.…

A: A neuron refers to the structural and functional unit of the nervous system which is involved in the…

Q: In signal transduction in the dark, the cGMP plays what role? a. It promotes an action potential…

A: Cyclic GMP (cGMP) is "Guanosine monophosphate" in which the phosphate group is covalently linked to…

Q: atch the description with the statement that best describes the following statements…

A: When a cell is not stimulated, its resting membrane potential is defined as the electrical potential…

Q: Select one: a. increased amount of ATP b. movement of chlorine down its concentration gradient c.…

A: Introduction  Information is transmitted via neurons. They communicate between various brain regions…

Q: The figure below may help in answering some of the questions. 1. What ions are flowing (and in which…

A: The neurons are the cells of nervous system that is responsible for generation and transmission of…

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Q: At the peak of an action potential, would the relative permeability of Na be higher than K? Which…

A: Generation of nerve impulse in nerve  fibres depends upon distribution of sodium and potassium in…

Q: Describe the events that occur during action potential  ANSWER SHOULD INCLUDE: Explanation of how…

A: Action potential is defined as the sudden, fast, propagating change of resting membrane potential…

Q: Neurotransmitters are released from neurons due to the opening of ____________. Select one: a.…

A: Neuron is the sub unit of nervous system. It helps in coordinating the different body parts via…

Q: During the depolarization phase of an action potential, the permeability of the plasma membrane toa.…

A: Depolarization influence the membrane to attain the threshold potential at which the nerve cell…

Q: What membrane protein of the neuron is responsible for briefly increasing the Na+ permeability of…

A: Ans:- the option is (c)-the voltage gated sodium chennel.

Q: In an experiment, the extracellular [Na+] surrounding a nerve cell was reduced from 145 to 45 mM.…

A: In the presence and absence of an impulse, the nerve cells exist in two states known as action…

Q: Which of the following is the plateau stage of the action potential? A. Phase 0 B. Phase 1 C. Phase…

A: The heart is an excitable organ which can spontaneously generate action potentials. There are three…

Q: Reversal potential of ACh receptors is 0mV. Equilibrium potentials of Na* and K* are +60mV and…

A: An electromagnetic field (EMF) is a region of electrical charges that are moving. Some EMFs can be…

Q: In a chemical synapse,a. action potentials in the presynaptic terminal cause…

A: An electrical synapse can be described as a type of synapse that contains channel proteins…

Q: .dחaMa"in it the

A: The equilibrium potential is the particular membrane potential where the net flow through any open…

Q: is to say, the excitatory pathways become over ive, or the inhibitory pathways, esigned to temper…

A: Normally neuron has a resting membrane potential of about -70 millivolt. When an action potential…

Q: During the absolute refractory period (ARF) the voltage-gated sodium channels are mostly in their […

A: The absolute refractory period is the time following an action potential during which no additional…

Q: Which of the following situations correctly illustrates the all-or-none principle? Select one: a. A…

A: The magnitude of the action potential in any nerve fiber is independent of the strength of the…

Q: During the action potential, which of the following activity is LIKELY to occur? Select one: a. Na+…

A: An action potential (AP) occurs in physiology when the membrane potential of a given cell location…